The Marvel Fact Files are a series of encyclopedic guides which detail the fictional universe featured in Marvel Comics publications. The magazine series is published in the UK by starting in 2013. The magazines are published in a similar way to the Master Edition of the Official Handbook of the Marvel Universe: Each issue is a shrink-wrapped pack of double-sided loose-leaf pages (only glued together for transport). A three-ring vinyl binder was also released for the pages to be inserted into and is regularly distributed with the magazine.